ASTROSAT CZTI

Data Quality Report

Orbit 19686

Creation date: 2024-06-27T18:05:34.689134
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_221T01_9000002936_19686cztM0_level2.evt modeM0/AS1A05_221T01_9000002936_19686cztM0_level2_quad_clean.evt
Size (bytes)557,043,84085,466,880
Size531.2 MB 81.5 MB
Events in quadrant A3,315,100584,474
Events in quadrant B3,212,982595,424
Events in quadrant C3,296,834568,846
Events in quadrant D6,627,607409,396

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134111
B0130381
C0132551
D0235991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6149801.301025%
B6150911.479675%
C61491141.853960%
D6149179429.175476%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7449 6149 17 17 0.23% 0.28%
B 7450 6151 5 5 0.07% 0.08%
C 7449 6149 0 0 0.00% 0.00%
D 7449 6149 1369 1369 18.38% 22.26%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 16 161838 971.44 819 801 165.8
A 0 226 7156 38.34 819 801 165.8
A 3 137 5898 30.75 819 801 165.8
B 3 64 26619 170.07 805 788 151.9
B 12 111 17823 112.16 805 788 151.9
B 11 111 15469 96.66 805 788 151.9
C 14 238 122565 669.05 781 789 182.0
C 3 233 100809 549.52 781 789 182.0
C 9 221 18125 95.25 781 789 182.0
D 1 20 3187944 21534.88 609 593 148.0
D 7 38 550239 3713.61 609 593 148.0
D 1 52 310677 2095.04 609 593 148.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter